Bug in tazpanel > packages

Steps to reproduce:
- go to Packages > My packages
- check some packages (one or more)
- click a package name to see its details
- when on the package page, right-click and select Back in the context menu

Now the line above the buttons reads "Selected packages:" (blank), and buttons are grey out. But the packages are still checked, and if you uncheck them, you get a negative number of selected packages (and this activates the buttons :) ).

I know it.
I want to open "info" page in new window, or in new modal dialog within existing window, so you can close info and back to list without page reloading. Need to write the code. But it will not saves from "Back" button in general.

I can save checked packages in the Session Storage using JavaScript. It will save checked packages across pages (on paged packages lists) as it existing already but in other manner. It will solve "Back" problem. And I will add JavaScript code that will remove each package from Session Storage in real time after package upgrade.

Better mark the topic "Not solved" this time. It is not bug fixing but enhance. It will be solved but later.